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Roanoke County, VA Environmental Rules: Flood Zones (2026)

Some Restrictions

Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

FEMA flood zone rules in Roanoke County, VA, also called floodplain regulations or special flood hazard area (SFHA) rules, determine flood insurance requirements and elevation standards for new construction.

Key Facts

Permit required: before any floodplain development
Floodway rule: no encroachment without engineering study
Manufactured homes: barred from the floodway
Penalty: $10-$2,500/day misdemeanor
Appeal path: Board of Zoning Appeals, § 30-24

FEMA Flood Zone Lookup

FEMA assigns every parcel in the U.S. a flood-hazard designation on its Flood Insurance Rate Maps (FIRMs). Zones starting with A or V are high-risk Special Flood Hazard Areas where federally backed mortgages require NFIP flood insurance. Zone X indicates moderate-to-minimal risk, where insurance is optional but often recommended. Your specific zone determines insurance cost, build elevation, and permit requirements in Roanoke County, VA.

Zone	What it means	NFIP required?
A	High-risk flood area; 1% annual chance flood, no detailed analysis.	Yes
AE	High-risk; same as A but with established Base Flood Elevations.	Yes
AH	High-risk shallow flooding (1-3 ft), usually ponding.	Yes
AO	High-risk shallow flooding (1-3 ft) with sheet flow on sloping terrain.	Yes
V	High-risk coastal zone subject to wave action (no BFE).	Yes
VE	High-risk coastal zone with wave action and established BFEs.	Yes
X (shaded)	Moderate risk; between the 1% and 0.2% annual chance flood.	Recommended
X	Minimal risk; outside the 0.2% annual chance floodplain.	No

Look up Roanoke County, VA on the FEMA flood map

FEMA maps update periodically; verify zone before buying flood insurance or building.

Summary

In Roanoke County, Virginia (outside the independent cities of Roanoke and Salem), the Floodplain Overlay (FO) District bars new construction, fill, or manufactured homes in a FEMA-mapped special flood hazard area without a permit from the floodplain administrator. Code § 30-74-13(A) requires strict compliance with the Virginia Uniform Statewide Building Code and the county subdivision ordinance before any floodplain work begins.

These county ordinances apply to unincorporated areas of Roanoke County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

(A)All uses, activities, and development occurring within any floodplain area, including placement of manufactured homes, shall be undertaken only upon the issuance of a permit. Such development shall be undertaken only in strict compliance with the provisions of this section and with all other applicable codes and ordinances such as the Virginia Uniform Statewide Building Code (VA USBC) and the Roanoke County Subdivision Ordinance. Prior to the issuance of any such permit, the floodplain administrator shall require all applications to include compliance with all applicable state and federal laws and shall review all sites to assure they are reasonably safe from flooding. Under no circumstances shall any use, activity, and/or development adversely affect the capacity of the channels or floodways or any watercourse, drainage ditch, or any other drainage facility or system.

View official code

Full Breakdown

The Floodplain Overlay (FO) District, adopted under Ordinance No. 090820-14 and codified at Roanoke County Code § 30-74, applies to every parcel FEMA has mapped as a special flood hazard area on the county's Flood Insurance Rate Map, per § 30-74-2(A). Section 30-74-13(A) requires a permit before any land is developed or any structure is located, relocated, constructed, enlarged, or structurally altered in the floodplain, and the floodplain administrator, a position the county administrator designates under § 30-74-5, must confirm the application meets all applicable state and federal law and that the site is reasonably safe from flooding before issuing it.

Section 30-74-14 goes further inside the mapped floodway: no development is allowed there at all unless its effect on flood heights is fully offset by approved compensating improvements, and placement of a manufactured home in the floodway is flatly prohibited except in an existing manufactured home park. Applicants for a floodway encroachment must submit a hydrologic and hydraulic analysis, prepared by a professional engineer, showing the project will not raise the base flood elevation. Every permit application must disclose the elevation of the lowest floor and, for non-residential flood-proofed buildings, the flood-proofed elevation, under § 30-74-13(B).

New subdivisions touching a mapped floodplain must show the base flood elevation on the final recorded plat, § 30-74-13(C). Property owners who dispute their land's classification can bring the boundary question before the Board of Zoning Appeals under § 30-24, and hardship variances for construction below the base flood level require a BZA finding of exceptional hardship under § 30-74-17.

Violations & Fines

A structure built or altered in the floodplain without the required elevation certificate or other compliance documentation is presumed to be in violation under § 30-74-19 until the paperwork is produced. Section 30-74-20 routes enforcement and penalties through § 30-22 of the zoning ordinance, which makes any violation a misdemeanor punishable by a fine of $10 to $2,500, with each day of continued violation charged as a separate offense.

Frequently Asked Questions

Do I need a permit to build in a Roanoke County floodplain?

Yes. Roanoke County Code § 30-74-13(A) requires a permit from the floodplain administrator before any land is developed or structure is built, enlarged, or altered within a FEMA-mapped special flood hazard area, and the work must comply with the Virginia Uniform Statewide Building Code.

Can I place a manufactured home in the floodway?

No. Section 30-74-14(B) specifically prohibits placing any manufactured home in the floodway except within an existing manufactured home park that already meets the anchoring and elevation standards.

What happens if I develop without a floodplain permit?

The county treats undocumented floodplain work as a presumed violation under § 30-74-19, and § 30-74-20 applies the zoning ordinance's general misdemeanor penalty of $10 to $2,500 per day under § 30-22.

Who decides where the floodplain boundary sits on my property?

The floodplain administrator makes the initial determination; if you dispute it, § 30-74-10(C) sends the boundary question to the Board of Zoning Appeals, which hears technical evidence under the § 30-24 appeal procedure.

Sources & Official References

[1]Code of the County of Roanoke, Virginia (Municode)

Other rules in Roanoke County

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All Roanoke County rules

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